package com.itheima.ydd.controller;

/**
 * [一句话描述该类的功能]
 *
 * @author : [Cr Mr]
 * @version : [v1.0]
 * @date : [2022/3/4 11:37]
 * @Author: gonhsl
 * @Date:2022-03-02-20:38
 */

import com.itheima.ydd.common.ResultData;
import com.itheima.ydd.entity.Article;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.UUID;

@RestController
@Slf4j
@RequestMapping("/common")
public class CommonController {
    @Value("${ydd.path}")
    private String basePath;

    @PostMapping("/upload")
    public ResultData upload(MultipartFile file) {

        String originalFilename = file.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));
        String fileName = UUID.randomUUID().toString() + suffix;
        Article article = new Article();


        File dir = new File(basePath);
        if (!dir.exists()) {
            dir.mkdir();
        }

        try {
            file.transferTo(new File(basePath + fileName));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return ResultData.ok("", fileName);

    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) {
        try {
            FileInputStream fileInputStream = new FileInputStream(new File(basePath + name));
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");
            int len = 0;
            byte[] bytes = new byte[1024];
            while ((len = fileInputStream.read(bytes)) != -1) {
                outputStream.write(bytes, 0, len);
                outputStream.flush();
            }
            outputStream.close();
            fileInputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

